Fill in the grid so that every row and every column contains each digits 1 through 5 exactly once. Starting from the left bottom corner there must be along the spiral the number order 1 - 2 - 3 - 4 - 5 - 1 - 2 - ... - 4 - 5.

Fill in the grid so that every row and every column contains each digits 1 through 5 exactly once. Starting from the left bottom corner there must be along the spiral the number order 1 - 2 - 3 - 4 - 5 - 1 - 2 - ... - 4 - 5.

Fill in the grid so that every row and every column contains each digits 1 through 5 exactly once. Starting from the left bottom corner there must be along the spiral the number order 1 - 2 - 3 - 4 - 5 - 1 - 2 - ... - 4 - 5.

Fill in the grid so that every row and every column contains each digits 1 through 5 exactly once. Starting from the left bottom corner there must be along the spiral the number order 1 - 2 - 3 - 4 - 5 - 1 - 2 - ... - 4 - 5.

Fill in the grid so that every row and every column contains each digits 1 through 5 exactly once. Starting from the left bottom corner there must be along the spiral the number order 1 - 2 - 3 - 4 - 1 - 2 - ... - 3 - 4.